Bug 2539533 (CVE-2026-78437) - CVE-2026-78437 tomcat: Apache Tomcat: Denial of Service via malformed HTTP/2 request
Summary: CVE-2026-78437 tomcat: Apache Tomcat: Denial of Service via malformed HTTP/2 ...
Keywords:
Status: NEW
Alias: CVE-2026-78437
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2543044
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-23 16:49 UTC by OSIDB Bzimport
Modified: 2026-09-29 10:06 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-23 16:49:59 UTC 
Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause one request from another user to fail.



This issue affects Apache Tomcat: from 11.0.19 through 11.0.25, from 10.1.53 through 10.1.59, from 9.0.116 through 9.0.121.



Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
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